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authorChanwoo Choi <cw00.choi@samsung.com>2015-04-24 19:16:05 +0900
committerChanwoo Choi <cw00.choi@samsung.com>2015-05-22 18:58:44 +0900
commit2a9de9c0f08d61fbe3764a21d22d0b72df97d6ae (patch)
treeabad4db6fcab2a64850e6874856b1d81608bd4bc /drivers/extcon/extcon-usb-gpio.c
parent35eed7a0768886e2f66db3cdbf3faf6435275e6b (diff)
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extcon: Use the unique id for external connector instead of string
This patch uses the unique id to identify the type of external connector instead of string name. The string name have the many potential issues. So, this patch defines the 'extcon' enumeration which includes all supported external connector on EXTCON subsystem. If new external connector is necessary, the unique id of new connector have to be added in 'extcon' enumeration. There are current supported external connector in 'enum extcon' as following: enum extcon { EXTCON_NONE = 0x0, /* USB external connector */ EXTCON_USB = 0x1, EXTCON_USB_HOST = 0x2, /* Charger external connector */ EXTCON_TA = 0x10, EXTCON_FAST_CHARGER = 0x11, EXTCON_SLOW_CHARGER = 0x12, EXTCON_CHARGE_DOWNSTREAM = 0x13, /* Audio and video external connector */ EXTCON_LINE_IN = 0x20, EXTCON_LINE_OUT = 0x21, EXTCON_MICROPHONE = 0x22, EXTCON_HEADPHONE = 0x23, EXTCON_HDMI = 0x30, EXTCON_MHL = 0x31, EXTCON_DVI = 0x32, EXTCON_VGA = 0x33, EXTCON_SPDIF_IN = 0x34, EXTCON_SPDIF_OUT = 0x35, EXTCON_VIDEO_IN = 0x36, EXTCON_VIDEO_OUT = 0x37, /* Miscellaneous external connector */ EXTCON_DOCK = 0x50, EXTCON_JIG = 0x51, EXTCON_MECHANICAL = 0x52, EXTCON_END, }; For example in extcon-arizona.c: To use unique id removes the potential issue about handling the inconsistent name of external connector with string. - Previously, use the string to register the type of arizona jack connector static const char *arizona_cable[] = { "Mechanical", "Microphone", "Headphone", "Line-out", }; - Newly, use the unique id to register the type of arizona jack connector static const enum extcon arizona_cable[] = { EXTCON_MECHANICAL, EXTCON_MICROPHONE, EXTCON_HEADPHONE, EXTCON_LINE_OUT, EXTCON_NONE, }; And this patch modify the prototype of extcon_{get|set}_cable_state_() which uses the 'enum extcon id' instead of 'cable_index'. Because although one more extcon drivers support USB cable, each extcon driver might has the differnt 'cable_index' for USB cable. All extcon drivers can use the unique id number for same external connector with modified extcon_{get|set}_cable_state_(). - Previously, use 'cable_index' on these functions: extcon_get_cable_state_(struct extcon_dev*, int cable_index) extcon_set_cable_state_(struct extcon_dev*, int cable_index, bool state) -Newly, use 'enum extcon id' on these functions: extcon_get_cable_state_(struct extcon_dev*, enum extcon id) extcon_set_cable_state_(struct extcon_dev*, enum extcon id, bool state) Cc: Arnd Bergmann <arnd@arndb.de> Cc: Felipe Balbi <balbi@ti.com> Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com> Acked-by: Roger Quadros <rogerq@ti.com> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com> Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com> [arnd: Report the build break about drivers/usb/phy/phy-tahvo.c after using the unique id for external connector insteadf of string] Reported-by: Arnd Bergmann <arnd@arndb.de> [dan.carpenter: Report the build warning of extcon_{set|get}_cable_state_()] Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Diffstat (limited to 'drivers/extcon/extcon-usb-gpio.c')
-rw-r--r--drivers/extcon/extcon-usb-gpio.c32
1 files changed, 8 insertions, 24 deletions
diff --git a/drivers/extcon/extcon-usb-gpio.c b/drivers/extcon/extcon-usb-gpio.c
index 900744b978fc..14da94cb57fa 100644
--- a/drivers/extcon/extcon-usb-gpio.c
+++ b/drivers/extcon/extcon-usb-gpio.c
@@ -39,18 +39,10 @@ struct usb_extcon_info {
struct delayed_work wq_detcable;
};
-/* List of detectable cables */
-enum {
- EXTCON_CABLE_USB = 0,
- EXTCON_CABLE_USB_HOST,
-
- EXTCON_CABLE_END,
-};
-
-static const char *usb_extcon_cable[] = {
- [EXTCON_CABLE_USB] = "USB",
- [EXTCON_CABLE_USB_HOST] = "USB-HOST",
- NULL,
+static const enum extcon usb_extcon_cable[] = {
+ EXTCON_USB,
+ EXTCON_USB_HOST,
+ EXTCON_NONE,
};
static void usb_extcon_detect_cable(struct work_struct *work)
@@ -68,24 +60,16 @@ static void usb_extcon_detect_cable(struct work_struct *work)
* As we don't have event for USB peripheral cable attached,
* we simulate USB peripheral attach here.
*/
- extcon_set_cable_state(info->edev,
- usb_extcon_cable[EXTCON_CABLE_USB_HOST],
- false);
- extcon_set_cable_state(info->edev,
- usb_extcon_cable[EXTCON_CABLE_USB],
- true);
+ extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, false);
+ extcon_set_cable_state_(info->edev, EXTCON_USB, true);
} else {
/*
* ID = 0 means USB HOST cable attached.
* As we don't have event for USB peripheral cable detached,
* we simulate USB peripheral detach here.
*/
- extcon_set_cable_state(info->edev,
- usb_extcon_cable[EXTCON_CABLE_USB],
- false);
- extcon_set_cable_state(info->edev,
- usb_extcon_cable[EXTCON_CABLE_USB_HOST],
- true);
+ extcon_set_cable_state_(info->edev, EXTCON_USB, false);
+ extcon_set_cable_state_(info->edev, EXTCON_USB_HOST, true);
}
}